optimize for really small systems

Default to busybox hush for noMMU systems.
Add busybox profiles to choose a minimal busybox
config for noMMU systems.
Add gdb git from ysato for h8/300 simulator.

Change some kernel defaults to off to have a really
small kernel.

For bfin simulator the kernel+initramfs is smaller then
2MB in size.

3 files changed, 26 insertions, 18 deletions

diff --git a/target/config/Config.in.gdb b/target/config/Config.in.gdb
index e151f1aa0..79d20dd67 100644
--- a/target/config/Config.in.gdb
+++ b/target/config/Config.in.gdb
@@ -4,12 +4,18 @@
 choice
 prompt "GNU debugger version"
 default ADK_TOOLCHAIN_GDB_7_9_1 if ADK_TARGET_ARCH_BFIN
+default ADK_TOOLCHAIN_GDB_H8300_GIT if ADK_TARGET_ARCH_H8300
 default ADK_TOOLCHAIN_GDB_7_10_1
 
 config ADK_TOOLCHAIN_GDB_GIT
 	bool "git"
 	depends on !ADK_TARGET_ARCH_AVR32
 	depends on !ADK_TARGET_ARCH_BFIN
+	depends on !ADK_TARGET_ARCH_H8300
+
+config ADK_TOOLCHAIN_GDB_H8300_GIT
+	bool "h8300-git"
+	depends on ADK_TARGET_ARCH_H8300
 
 config ADK_TOOLCHAIN_GDB_7_10_1
 	bool "7.10.1"
diff --git a/target/config/Config.in.runtime b/target/config/Config.in.runtime
index b4fe068c8..8bcef7fb7 100644
--- a/target/config/Config.in.runtime
+++ b/target/config/Config.in.runtime
@@ -10,7 +10,6 @@ config ADK_RUNTIME_HOSTNAME
 choice
 prompt "init"
 depends on !ADK_TOOLCHAIN_ONLY
-default ADK_RUNTIME_INIT_SIMPLEINIT if ADK_TARGET_WITHOUT_MMU
 default ADK_RUNTIME_INIT_SYSV
 
 config ADK_RUNTIME_INIT_SYSV
@@ -112,7 +111,7 @@ config ADK_RUNTIME_TMPFS_SIZE
 	default "32768" if ADK_TARGET_SYSTEM_RASPBERRY_PI2
 	default "32768" if ADK_TARGET_SYSTEM_SOLIDRUN_IMX6
 	default "8192" if ADK_TARGET_SYSTEM_MIKROTIK_RB532
-	default "2048"
+	default "1024"
 	depends on !ADK_RUNTIME_INIT_SIMPLEINIT
 	help
 	  Size of /tmp in memory in Kilobyte.
@@ -290,7 +289,7 @@ config ADK_RUNTIME_KBD_LAYOUT
 
 choice
 prompt "initial login shell for the root user"
-default ADK_ROOTSH_SASH if ADK_TARGET_WITHOUT_MMU
+default ADK_ROOTSH_HUSH if ADK_TARGET_WITHOUT_MMU
 default ADK_ROOTSH_MKSH
 
 config ADK_ROOTSH_MKSH
@@ -300,19 +299,19 @@ config ADK_ROOTSH_MKSH
 	  Use mksh (a Korn Shell variant) as standard login shell
 	  for the superuser.
 
+config ADK_ROOTSH_HUSH
+	bool "hush (busybox shell compatible with non-MMU systems)"
+	select BUSYBOX_HUSH if !ADK_TOOLCHAIN_ONLY
+	select BUSYBOX_FEATURE_SH_IS_HUSH if !ADK_TOOLCHAIN_ONLY
+	help
+	  hush shell from busybox.
+
 config ADK_ROOTSH_SASH
 	bool "sash (Shell compatible with non-MMU systems)"
 	select ADK_PACKAGE_SASH if !ADK_TOOLCHAIN_ONLY
 	help
 	  standalone shell.
 
-config ADK_ROOTSH_HUSH
-	bool "hush (busybox shell compatible with non-MMU systems)"
-	select BUSYBOX_HUSH
-	select BUSYBOX_FEATURE_SH_IS_HUSH
-	help
-	  hush shell from busybox.
-
 config ADK_ROOTSH_ASH
 	bool "ash (busybox shell)"
 	select BUSYBOX_ASH
@@ -345,7 +344,7 @@ endchoice
 
 choice
 prompt "system /bin/sh (POSIX script shell)"
-default ADK_BINSH_SASH if ADK_TARGET_WITHOUT_MMU
+default ADK_BINSH_HUSH if ADK_TARGET_WITHOUT_MMU
 default ADK_BINSH_MKSH
 
 config ADK_BINSH_MKSH
@@ -355,18 +354,18 @@ config ADK_BINSH_MKSH
 	  Use mksh (a Korn Shell variant) as system shell, which is
 	  both small and powerful, so quite suited for this task.
 
+config ADK_BINSH_HUSH
+	bool "hush (busybox)"
+	select ADK_PACKAGE_HUSH if !ADK_TOOLCHAIN_ONLY
+	help
+	  hush shell.
+
 config ADK_BINSH_SASH
 	bool "sash (Standalone Shell)"
 	select ADK_PACKAGE_SASH if !ADK_TOOLCHAIN_ONLY
 	help
 	  sash shell.
 
-config ADK_BINSH_HUSH
-	bool "hush (busybox)"
-	select ADK_PACKAGE_HUSH
-	help
-	  hush shell.
-
 config ADK_BINSH_ASH
 	bool "ash (busybox)"
 	select BUSYBOX_ASH
diff --git a/target/config/Config.in.target b/target/config/Config.in.target
index 4f8b95c04..4bf725e74 100644
--- a/target/config/Config.in.target
+++ b/target/config/Config.in.target
@@ -29,6 +29,7 @@ config ADK_TARGET_ROOTFS_INITRAMFS
 		ADK_TARGET_ARCH_X86_64
 	depends on !ADK_TARGET_VBOX
 	depends on !ADK_TARGET_SYSTEM_MIKROTIK_RB532
+	depends on !ADK_TARGET_SYSTEM_QEMU_M68K_MCF5208
 	select ADK_KERNEL_BLK_DEV_INITRD
 	help
 	  create an read-only initramfs system.
@@ -135,6 +136,7 @@ config ADK_TARGET_ROOTFS_ISO
 config ADK_TARGET_ROOTFS_INITRAMFSARCHIVE
 	bool "Archive usable for initramfs creation"
 	depends on !ADK_TARGET_SYSTEM_MIKROTIK_RB532 \
+		&& !ADK_TARGET_SYSTEM_QEMU_M68K_MCF5208 \
 		&& !ADK_TARGET_SIM
 	select ADK_KERNEL_BLK_DEV_INITRD
 	help
@@ -144,7 +146,8 @@ config ADK_TARGET_ROOTFS_ARCHIVE
 	bool "Archive usable for different filesystems"
 	select ADK_HOST_NEED_GENEXT2FS if ADK_TARGET_QEMU || ADK_TARGET_VBOX
 	select ADK_KERNEL_EXT2_FS if ADK_TARGET_QEMU || ADK_TARGET_VBOX
-	depends on !ADK_TARGET_SIM
+	depends on !ADK_TARGET_SIM \
+		&& !ADK_TARGET_SYSTEM_QEMU_M68K_MCF5208
 	help
 	  Use this option if your root filesystem is ext2/ext3/ext4/xfs.